The top mistakes in Carry On, Constable http://www.moviemistakes.com/film4699 en Sat, 22 Nov 2008 06:55:24 +0000 80738 When Sgt. Wilkins and P.C. Thurston go on patrol in the police car, it's registration number varies between scenes, from 892FPC to UUV133. 100217 At the end of the film when the four trainee constables find the villains hideout in the derelict house, PC Potter falls from the landing to the hallway.You can see the mattress put there for him to land on. It was not there in the previous shot and is gone in the next shot, when he joins in the fight between the other PC's and the villains.